Hi all, recently acquired a B6000 4x4 (from what I'm finding out around 73-77) with a fel and a tiny backhoe. It seems the front tires have been replaced with carlise AG tires but the rears are pretty cracked but still holding air and are AG in tread design but they seem to have awfully deep flutes (almost like I'm assumng rice paddy type tires since this machine was designed for that). They're Bridgestone 7:00 14. would the normal replacement AG tires be much different than what I have already?